• CN: 11-2187/TH
  • ISSN: 0577-6686

Journal of Mechanical Engineering ›› 2018, Vol. 54 ›› Issue (18): 194-203.doi: 10.3901/JME.2018.18.194

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Theoretical Analysis and Experimental Research on Temperature Field of Microscale Bone Grinding under Nanoparticle Jet Mist Cooling

YANG Min1, LI Changhe1, ZHANG Yanbin1, WANG Yaogang1, LI Benkai1, LI Runze2   

  1. 1. School of Mechanical and Automobile Engineering, Qingdao University of Technology, Qingdao 266520;
    2. Department of Biomedical Engineering, University of Southern California, Los Angeles CA90089-1111, USA
  • Received:2016-07-27 Revised:2018-04-25 Online:2018-09-20 Published:2018-09-20

Abstract: Excessively high temperature is currently the technical bottleneck in clinical neurosurgery bone grinding, while nanoparticle jet mist cooling (NJMC) is an effective solution to prevent heat injuries. Undeformed chip thickness model and heat flux model are established, and convective heat transfer coefficient model under NJMC condition is established by using mathematical statistics method. Results show that bone surface temperature decreases with the increase of nanoparticle volume fraction. The mechanical properties of bovine femur compact bone are most similar to human bone, which is used in the micro grinding experiment. Results found that, compare with mist cooling (32.7℃), temperature using 0.5%, 1%, 1.5%, 2%, 2.5% nanofluids is 14.1%, 17.1%, 19.6%, 22.9% and 33.3% lower, verifying the law of surface temperature decreases with the increase of nanoparticle volume fraction. The theoretical analysis is in good agreement with experimental results, confirming the validity of the theoretical model. Mechanical machining techniques are applied to healthcare, aiming to provide an effective way to lower micro-grinding temperature in clinical neurosurgery.

Key words: convective heat transfer coefficient, mist cooling, nanoparticle, neurosurgery bone grinding, temperature field

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